• Title/Summary/Keyword: self-activation

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Age-Specific Brain Activation in Secondary School Students' Self-Regulating Activities on Biological Tasks -fNIRS Study (생물 과제의 자기조절 활동에서 나타나는 중등학생의 연령별 두뇌 활성 -fNIRS 연구)

  • Lee, Seo-Ri;Kwon, Yong-Ju
    • Journal of Science Education
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    • v.46 no.1
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    • pp.30-39
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    • 2022
  • The purpose of this study is to compare and analyze secondary school student's brain activity on assimilation, conflict, and accommodation processes of self-regulation. The self-regulation task was presented a biological phylogenetic task, and the brain activity was measured and analyzed with fNIRS. As a result, a significant activation was found in the left DLPFC, OFC, and FP regions in the conflict process compared to the assimilation process, and a significant activation was found in DLPFC and VLPFC in the accommodation process. As the age increase, the DLPFC also increases in the conflict process and VLPFC increases in the assimilation process. In addition, comparing conflict and accommodation process, the 7th grade students show a significant brain activity in the right VLPFC, the 9th grade students show significant brain activity in the left FP and DLPFC areas in the accommodation process. However, the 11th grade students did not show any significant brain activity at this process. These results presumably show that the neurological research method could be applied to educational research in cognitive activity and classroom instructional situation.

Short-Term Effects of an Self-Management Support Intervention on Patient Activation, Joint Flexibiltiy and Health-related Quality of Life among Korean Medical Aid Beneficiaries with Osteoarthritis (지역사회기반의 자기관리지지중재가 골관절염 의료급여수급자의 환자활력, 관절유연성 및 건강 관련 삶의 질에 미치는 단기효과)

  • Ahn, Yang Heui;Hur, Jae Bock;Choi, Eun Hee
    • 한국노년학
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    • v.36 no.3
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    • pp.595-609
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    • 2016
  • The purpose of this study was to test the effectiveness of an eight session self-management support program for improvement of patient activation, joint flexibility and health-related quality of life among medical aid beneficiaries with osteoarthritis. This study was part of a randomized and controlled research of a self-management support intervention. Participants were 60 medical aid beneficiaries who agreed to participate in this study, and were assigned to an experimental group (n=30) or control group (n=30). The 8-session and tailored program led by a trained case manager with the patient-centered approaches and cognitive-emotional-behavioral skills. Analysis included change in scores, ${\chi}^2-test$, Fisher's exact test, t-test and ANCOVA. The results showed significant increase in patient activation, joint flexibility (shoulder and right knee) except health-related quality of life in the experimental group compared to the control group. The self-management support program indicated an effect on patient activation and joint flexibility. Further research is needed to examine the outcome in the long term(9 and 12-month follow up).

Combination of Mechano-chemical Activation and SHS for HTS Material Synthesis

  • N. Korobova;Deawha Soh
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2004.05a
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    • pp.96-99
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    • 2004
  • The combination of mechano-chemical activation and Self-propagating High-temperature Synthesis (SHS) has widened the possibilities for both methods. For YBCO systems the investigation showed that a short-term mechano-chemical activation of initial powders before SHS leads to single-phase and ultra-fine products. A new technique for preparation ultra-fine high-temperature superconductors of YBCO composition with a grain size d <1 ${\mu}{\textrm}{m}$ is developed. The specific feature of the technique is formation of the YBa$_2$Cu$_3$O$_{7-{\delta}}$ crystalline lattice directly from an X-ray amorphous state arising as a result of mechanical activation of the original oxide mixture. The technique allows the stage of formation of any intermediate reaction products to be ruled out. X-ray and magnetic studies of ultra-fine high temperature superconductors (HTS) are carried out. Dimension effects associated with the microstructure peculiarities are revealed. A considerable enhancement of inter-grain critical currents is found to take place in the ultra-fine samples.fine samples.

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Environment Improvement for the Traditional Market Activation of the Small Capital - Focused on Okcheon Traditional Market- (소도읍의 재래시장 활성화를 위한 환경개선에 대한 연구 -충북 옥천재래시장을 중심으로-)

  • Han, Sang-Ho;Choi, Hyo-Seung
    • Journal of the Korean Institute of Rural Architecture
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    • v.6 no.3
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    • pp.1-14
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    • 2004
  • Around the rural village area the traditional markets which are center the small capital it was active at the strong-point and the possibility the fact that it is developed. With this the same small capital currently as the city and the area where the quality of the rural village coexists, has the regional quality which belongs in guard of the capital region or strong-point city. With relative estrangement from the support process against this result past falling behind farming village it does not illustrate the possibility of knowing the fact that the duplex point who is falling behind as guard territory of reverse appears. Selects the small capital of the each area from like this point of view and the possibility of knowing center role of traditional market the possibility which is various is the possibility of doing in the process which propels an activation. Currently it is planned from the multi local self-governing group and the result which investigates the traditional market activation contents which are in the process of propelling, it will be able to discover the multi branch problem points against a traditional market activation.

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Peculiarities of SHS and solid state synthesis of $ReBa_{2}Cu_{3}O_{7-x}$ materials

  • Sho, Dea-Wha;Li, Yingmei;Cho, Yong-Joon;Kim, Tae-Wan;Korobova, N.;Isaikina, O.;Mansurov, Z.;Baydeldinova, A.;Ksandopoulo, G.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.07a
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    • pp.620-623
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    • 2001
  • The peculiarities of using Self-propagating High-temperature Synthesis (SHS) and solid state phase synthesis for production of high temperature superconductor materials are discussed. Oxide superconductors with general formula $ReBa_2$$Cu_3$$O_{7-x}$ (Re= Y, Yb, Sm, Nd) have been made with using barium oxide initial powder instead of traditional barium carbonate. X-ray powder diffraction showed a single phase orthorhombic perovskite structure was produced in all reactions. Phenomena observed during the grinding of the reactant mixture are presented. Mechano-chemical activation - as a pretreatment of the reactant mixture - strongly influences the kinetic parameters, the reaction mechanism, and the composition and structure of the final product.

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Design of Self-Organizing Networks with Competitive Fuzzy Polynomial Neuron (경쟁적 퍼지 다항식 뉴론을 가진 자기 구성 네트워크의 설계)

  • Park, Ho-Sung;Oh, Sung-Kwun;Kim, Hyun-Ki
    • Proceedings of the KIEE Conference
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    • 2000.11d
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    • pp.800-802
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    • 2000
  • In this paper, we propose the Self-Organizing Networks(SON) based on competitive Fuzzy Polynomial Neuron(FPN) for the optimal design of nonlinear process system. The SON architectures consist of layers with activation nodes based on fuzzy inference rules. Here each activation node is presented as FPN which includes either the simplified or regression Polynomial fuzzy inference rules. The proposed SON is a network resulting from the fusion of the Polynomial Neural Networks(PNN) and a fuzzy inference system. The conclusion part of the rules, especially the regression polynomial uses several types of high-order polynomials such as liner, quadratic and modified quadratic. As the premise part of the rules, both triangular and Gaussian-like membership functions are studied. Chaotic time series data used to evaluate the performance of our proposed model.

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Complement regulation: physiology and disease relevance

  • Cho, Heeyeon
    • Clinical and Experimental Pediatrics
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    • v.58 no.7
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    • pp.239-244
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    • 2015
  • The complement system is part of the innate immune response and as such defends against invading pathogens, removes immune complexes and damaged self-cells, aids organ regeneration, confers neuroprotection, and engages with the adaptive immune response via T and B cells. Complement activation can either benefit or harm the host organism; thus, the complement system must maintain a balance between activation on foreign or modified self surfaces and inhibition on intact host cells. Complement regulators are essential for maintaining this balance and are classified as soluble regulators, such as factor H, and membrane-bound regulators. Defective complement regulators can damage the host cell and result in the accumulation of immunological debris. Moreover, defective regulators are associated with several autoimmune diseases such as atypical hemolytic uremic syndrome, dense deposit disease, age-related macular degeneration, and systemic lupus erythematosus. Therefore, understanding the molecular mechanisms by which the complement system is regulated is important for the development of novel therapies for complement-associated diseases.

BSCCO Superconducting Powder by SHS

  • Soh, Dea-Wha;Cho, Yong-Joon;Korobova, N.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.11a
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    • pp.99-102
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    • 2002
  • The BSCCO superconductor materials of using Self-propagating High-temperature Synthesis (SHS) were studied. Mechano-chemical activation - as a pre-treatment of the reactants mixture - strongly influences the kinetic parameters, the reaction mechanism, and the composition and structure of the final product. In this paper as an effort for fabricating the SHSed BSCCO superconductor powder SHS method was considered to application in the synthesis of superconducting materials.

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Antibacterial effect of self-etching adhesive systems on Streptococcus mutans

  • Kim, Seung-Ryong;Shin, Dong-Hoon
    • Restorative Dentistry and Endodontics
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    • v.39 no.1
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    • pp.32-38
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    • 2014
  • Objectives: In this study, we evaluated the antibacterial activity of self-etching adhesive systems against Streptococcus mutans using the agar diffusion method. Materials and Methods: Three 2-step systems, Clearfil SE Bond (SE, Kuraray), Contax (CT, DMG), and Unifil Bond (UnB, GC), and three 1-step systems, Easy Bond (EB, 3M ESPE), U-Bond (UB, Vericom), and All Bond SE (AB, BISCO) were used. 0.12% chlorhexidine (CHX, Bukwang) and 37% phosphoric acid gel (PA, Vericom) were used as positive controls. Results: The antibacterial activity of CHX and PA was stronger than that of the other groups, except SE. After light activation, the inhibition zone was reduced in the case of all 2-step systems except CT. However, all 1-step systems did not exhibit any inhibition zone upon the light activation. Conclusions: SE may be better than CT or UnB among the 2-step systems with respect to antibacterial activity, however, 1-step systems do not exhibit any antibacterial activity after light curing.